1992

6.7

1943

7.6

2000

5.1

1957

8.1

2014

5.9

2009

4.6

2004

5.9

1972

7.1

2008

7.8

2002

6.1

2004

10.0

1949

6.9

2015

5.5

2001

9.9

1967

7.3

2012

6.4

1972

6.8

2006

9.8

1995

7.3

1989

4.9